Thanks for your reply, db!
Our scope says we do "Marketing, Sales & Distribution" for our products. From the beginning we've been clear with our registrar that that's all we do, only using QS certified suppliers. Now they're saying that's not enough and that they'll need to audit our manufacturing sites (ie our suppliers) because they dont' recognize our supplier's registrar. Funny, they're not insisting to audit our design location in Germany.
To me its a cheap ploy to get more $$ from us. Or they goofed and should have never certified us.
So I was trying to understand their reasoning based on the QS requirements. Your answer certainly brings more food for thought...